I used the jaybirds x2 and the battery was terrible after two months and I was more than careful on how I charged them. Later on I purchased the Vasa Bla from Sudio Sweden. Not bad in terms of sound, excellent it build but they just wouldn't stay in my ears, no matter which silicone tips I used.
I purchased two models from Mpow, the Wolverine and the Swift (or some similar name like that) but the signal reach was terrible on both as I left the phone on a table in the gym. The music often stopped playing after 10 meters away.
Then I found out about the Decibullz custom mold earphones. These are by far the best wireless earphones I have used. The fit is perfect, as expected from something you mold for your own ear. The sound is terrific, I was very surprised by the bass, it's astounding. The battery last me three workout, one workout is about two hours long. The seal is great, not much from the outside noise will get by.
They are sweat-proof and quite durable, as I have been using them for almost a year they are in a great shape having the fact in mind that I have actually ripped them our of my ears while working out in the gym.
I highly recommend the Decibullz custom molds 🙂